Table-actuating mechanism for rolling-mills.



F. C. BIGGERT, JR. TABLE ACTUATING MECHANISM FOR ROLLING MILLS.

APPLICATION FILED MAR. 27, I9l5.

Patented Nov. 23, 1915.

2 SHEETS-SHEET l- INVENTOR (1. Q4

\LLIITN ESSES L I WWw- F. C. BIGGERT, JR.

TABLE ACTUATING MECHANISM FOR ROLLING MILLS. APPLICATION FILED MAR. 27. l9l5.

LL 61,441, 5 Patented Nov. 23, 1915.

2 SHEETSSHEET 2- Hlllll Him] IllllllllllWilTlllllIlflflll A J i l Tl L. J WITNESSES the mill, and 9 a roll table at the opposite FLOI LENCE C. BIGGER/T, JR., 013 GRAFTON, PENNSYLVANIA, ASSIGNOR T0 UNITED ENGINEERING 8c FOUNDRY COMPANY, OF PITTSBURGH, IENNSYLVZANIA, A COR- PORATION OF PENNSYLVANIA.

TABLE-ACTUATING MECIIANISM FOR ROLLING-MILLS.-

Patented Nov. 23, 1915.

Application filed March 27, 1915. Serial No. 17,363.

To all whom it may concern Be it known that I, FLORENCE C. Bmonn'r, Jr., a citizen of the United States, residing at 'Crafton, Allegheny county, Pennsylvania, have invented a new and useful Improvement in Table-Actuating Mechanism for RollingMills, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which trating one arrangement of the electric cir-' cuits.

My invention has relation to table mechanism for rolling mills; and more particu larly for threehigh mills of the type in which the bottom roll is vertically adjustable. In vertically adjustable mills of this type, adjustable tables are employed; and it is desirable thatmeans be providedfifor controlling the lowered position of the tables in accordance with the adjusted position of the bottom mill roll. My invention is designed to provide simple and efficient means whereby the tables are automatically adjusted in their lowered positions in ac coildance with the position of said bottom ro In the accompanying drawings the numeral 2 designates the housing of a three high mill,'3 the top roll, 4 the middle roll, and 5 the bottom roll, nThis bottom roll may be adjusted in any suitable orwell known manner. In the drawing (see Figs. 1, and4) I have shown an adjusting'screw 6 for this purpose operated bywormgearing 7 actuated from any suitable source'of power, not shown.

8 designates a roll table at. one side'o'f side. These roll tables may be in general of any usual or suitable form and hinged or pivoted as indicated at 10 to permit vertical movement thereof to suit'the different adjustments and passes of the rolls;

11 designates a table actuating electric motor connected by. gearing 12 with a shaft 13 having mounted thereon a [{inion 14 19 is a table supporting and actuating member connected at its lower end to asec- 0nd arm 20 fixed to the shaft 18 and at its upper end engaging the frame of the roll table 9. Preferably, this engagement is formed by the ball and socket members 21 and 22.

For the purpose of actuating both tablessimultaneously a link 23 connects the rocker arm 17'- with a rocker arm 24 of a shaft 25 having a second rocker arm 26 connected by a member 27, similar to the member 19,

\ with the table 8.

trolling the motor and enabling the tables to stop in the desired lowered positions, de-

pending upon the particular adjustment of the bottom mill roll 5, I provide mechanism controlled by said bottom roll, and which in turn controls the motor circuit.. This arrangement is shown as being constructed and arranged as follows: The screw 6 has nected by the link '30' and lever 31 with a 36. 37 is a tappet arm on the frame of the table 9 and which is adapted when the table is lowered to contact with the lever36 and open the motor circuit which has been closed at the contacts 34 and 35. Inasmuch as the 7 vertical position of these contacts is dependent upon the adjusted position of the bottom roll, through the connections described,--it will be apparent that when the roll is adjusted to a relatively high position, the motor circuit will be opened and the ttable stopped at a higher plane than when the roll 5 is at a' lower position, with a corresponding change in the position of 5 the motor circuits controlled by the contacts the contacts. In this manner, the tables will be automatically stopped in any case at the desired heights with reference to the adjustment of said roll 5.

Thetable 9 may be provided with a sec- 0nd tappet 38 adapted to engage a contact lever.39 whenthe tables are raised to their highest positions, and thus again open the motor circuit to automatically stop the tablesin this position. As the adjustment of the middle roll never changes, this second set of contacts requires no adjustment, but may be supported on a fixed frame member 40. j

By reference to Eig.,5 the arrangement of will be readily understood. NVhen the reversing switch 41 is in the. position shown in this figure, and they tablesare in the elevated position shown in Fig. 1, the contacts 34 and 35 will be closed and the contact controlled by the contact lever 39 will be open. When said switch is thrown to the right the circuit of the motor is completed through the contacts 34 and 35, thereby starting the table in its downward movement. The contact carrier 39 will now close, but this will not affect the motor circuit, which at this time is open at the reversing switch 41, so far as *this set of contacts is concerned. When the tappet arm 37 contacts with the contact carrier 36, the motor circuit is entirely opened and remains open until the to raise the table It willbe .readily understood that the parreversing switch is thrown to its left hand position, at which time a complete-circuit is established through the contact member 39 ticular construction and arrangement of the -parts shown may be widely departed from without departing from thespirit and scope fof my invention as defined in the appended laim's. Thus, the connections controlled by the bottom roll for controlling the motor circuit may be widely varied; the actuating connections between the table operating motors and the tables may also be greatly changed, and various other changes can be made within the scopeof the claims.

. I claim: c

1. In a three-high-rolling mill having an adjustable bottom roll, the combination with a vertically movable table, of a motor for raising and lowering the table, and means for automatically varying the lowered position of the table in accordance with the adjusted position of the bottom mill roll, substantially as described.

2. A ,rolling mill having a vertically adjustable botto'm roll, a vertically movable table, a motor for raising andalowering the table, and motor controlling devices con-- vertically movable table, a motor for raising and lowering the table, a movable circuit controlling device for said motor, means for automatically actuating said device to open the circuit when the table reaches a predetermined position, and actuating connections between said device and the bottom roll for shifting said device'in accordance with difl erent adjustments of said roll, substantially as described.

5.. In a three-high mill having a vertically adjustable bottom roll, the combination of a vertically movable table, a motor for raising I and lowering the table, a movable circuit controlling device forisaid motor, means for automatically actuating said device to open the ciruit when the table reaches a predetermined position, and actuating connections between said device-and the bottom roll for shifting said device in accordance with difl erent adjustments of said roll, to-

gether with other circuit controlling connections for the motor and means for actuating the same when the table reaches its upper adjustment, substantially as described.

6. In a three-high rolling mill having a vertically adjustable bottom roll, the combimeans for simultaneously raising and lowering the two tables,'a shiftable controlling device for the motive means, and connections vfor shifting theposition of said device in accordance with the adjustment of the bottom roll, substantially as described.

In testimony whereof, I have hereunto set my hand. i Y

. FLORENCE o. BIGGERT, JR;

Witnesses: H. M. CORWIN, GEO. H. PARMELEE.

nation of vertically adjustable tables, motive 

